Last week, Quebec Superior Court upheld a November 2008 U.S. judgment against Guerbuez after he was found guilty of sending out more than 4 million penis-enlargement, marijuana and pornographic spam messages via Facebook. It was the largest-ever award under the U.S.'s federal antispam law.

In its court filings, Facebook said Guerbuez stole passwords through phishing attacks and used a botnet of hacked computers to access Facebook accounts without authorization. If true, that would make his actions subject to a criminal prosecution in addition to the civil judgment against him.

But he seems happy with the attention. He has called a press conference for Wednesday and filled his blog with posts that show him living the high life in Las Vegas and Beverly Hills, and dining out at pricey restaurants such as Montreal's Queue De Cheval.

Facebook asked the Canadian court to uphold the U.S. judgment against Guerbuez after he failed to show to fight the charges in the U.S. District Court for the Northern District of California.

The company said Tuesday that it was reviewing the Canadian ruling, but provided a statement saying: "We're confident that the previous ruling will act as a powerful deterrent against those who would abuse Facebook."

After the U.S. judgment was upheld, Guerbuez wrote on his website: "I look forward to some solid press as history has been made, yet once again."